Top 10 Biorxiv Papers Today in Plant Biology


2.032 Mikeys
#1. Evaluation of Postharvest Storability of Ponkan Mandarins at Different Storage Temperatures Based on Principal Component Analysis
Nan Cai, chunpeng wan, Jinyin Chen, Chuying Chen
To reduce postharvest losses of Ponkan mandarins caused by outdated storage facilities and preservation technology, we evaluated the preservation effect of different storage temperatures on Ponkan mandarins (5 ± 1, 10 ± 1, 15 ± 1, and 20 ± 1 °C), and obtained a comprehensive score using principal component analysis (PCA) to determine its suitable storage temperature. The results indicate that, relative to the other three storage temperatures, storage at 10 °C significantly maintains high total soluble solid content, titratable acid, and vitamin C contents; the accumulation of malondialdehyde (MDA) and hydrogen peroxide (H2O2) content decreased and changes in the relative conductivity (REC) were suppressed; and high activities of superoxide-dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX), as well as high contents of total phenol and total flavonoid were maintained. The PCA and clustering heat map results show that that the comprehensive score was the highest when stored at 10 °C. The data indicate...
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biorxivpreprint: Evaluation of Postharvest Storability of Ponkan Mandarins at Different Storage Temperatures Based on Principal Component Analysis https://t.co/RKo36qgzUF #bioRxiv
biorxiv_plants: Evaluation of Postharvest Storability of Ponkan Mandarins at Different Storage Temperatures Based on Principal Component Analysis https://t.co/Uecdkf5txM #biorxiv_plants
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Authors: 4
Total Words: 7572
Unqiue Words: 2595

2.013 Mikeys
#2. An integrative approach to investigate natural variation in the accumulation of aliphatic glucosinolates in Arabidopsis thaliana
Suraj Sharma, Ovidiu Popa, Oliver Ebenhoeh, Stanislav Kopriva
Glucosinolates are a fascinating class of specialised metabolites found in the plants of Brassicacea family. The variation in glucosinolate composition across different Arabidopsis ecotypes could be a result of allelic compositions at different biosynthetic loci. The contribution of methylthioalkylmalate synthase (MAM) genes to diversity of glucosinolate profiles across different Arabidopsis ecotypes has been confirmed by genetic analyses. Different MAM isoforms utilise different chain-elongated substrates for glucosinolate biosynthesis causing thus a variation in chain lengths across different Arabidopsis ecotypes. To further investigate the relationship between the genotype and the associated metabolic phenotype, we studied the diversity of genes and enzymes of glucosinolate biosynthesis. Using Shannon entropy as a measure we revealed that several genes of the pathway show a clear derivation from the expected behaviour, either accumulating non-synonymous SNPs or showing signs of purifying selection. We found that the...
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biorxivpreprint: An integrative approach to investigate natural variation in the accumulation of aliphatic glucosinolates in Arabidopsis thaliana https://t.co/Cc7gISbywe #bioRxiv
biorxiv_plants: An integrative approach to investigate natural variation in the accumulation of aliphatic glucosinolates in Arabidopsis thaliana https://t.co/qnPfrE903V #biorxiv_plants
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Sample Sizes : [6]
Authors: 4
Total Words: 8212
Unqiue Words: 2680

2.0 Mikeys
#3. A novel pathway linking plasma membrane and chloroplasts is co-opted by pathogens to suppress salicylic acid-dependent defences
Laura Medina-Puche, Huang Tan, Vivek Dogra, Mengshi Wu, Tabata Rosas-Diaz, Liping Wang, Xue Ding, Dan Zhang, Xing Fu, Chanhong Kim, Rosa Lozano-Duran
Chloroplasts are crucial players in the activation of defensive hormonal responses during plant-pathogen interactions. Here, we show that a plant virus-encoded protein re-localizes from the plasma membrane to chloroplasts upon triggering plant defence, interfering with the chloroplast-dependent activation of anti-viral salicylic acid (SA) biosynthesis. Strikingly, we have found that plant pathogens from different kingdoms seem to have convergently evolved to target chloroplasts and impair SA-dependent defences following an association with membranes, which is based on the co-existence of two subcellular targeting signals, an N-myristoylation site and a chloroplast transit peptide. This pattern is also present in plant proteins, at least one of which conversely activates SA defences from the chloroplast. Taken together, our results suggest that a pathway linking plasma membrane to chloroplasts and activating defence exists in plants, and that such pathway has been co-opted by plant pathogens during host-pathogen co-evolution to...
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biorxivpreprint: A novel pathway linking plasma membrane and chloroplasts is co-opted by pathogens to suppress salicylic acid-dependent defences https://t.co/V8cH58z5ke #bioRxiv
biorxiv_plants: A novel pathway linking plasma membrane and chloroplasts is co-opted by pathogens to suppress salicylic acid-dependent defences https://t.co/W0ZFnnWOZr #biorxiv_plants
PromPreprint: A novel pathway linking plasma membrane and chloroplasts is co-opted by pathogens to suppress salicylic acid-dependent defences https://t.co/dPKeATDeQy
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Authors: 11
Total Words: 0
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2.0 Mikeys
#4. RNA G-quadruplex structures exist and function in vivo
Xiaofei Yang, Jitender Cheema, Yueying Zhang, Hongjing Deng, Susan Duncan, Mubarak Ishaq Umar, Jieyu Zhao, Qi Liu, Xiaofeng Cao, Chun Kit Kwok, YILIANG DING
Guanine-rich sequences are able to form complex RNA structures termed RNA G-quadruplexes in vitro . Because of their high stability, RNA G-quadruplexes are proposed to exist in vivo and are suggested to be associated with important biological relevance. However, there is a lack of direct evidence for RNA G-quadruplex formation in living cells. Therefore, it is unclear whether any purported functions are associated with the specific sequence content or the formation of an RNA G-quadruplex structure. Here, we profiled the landscape of those guanine-rich regions with the in vitro folding potential in the Arabidopsis transcriptome. We found a global enrichment of RNA G-quadruplexes with two G-quartets whereby the folding potential is strongly influenced by RNA secondary structures. Using in vitro and in vivo RNA chemical structure profiling, we determined that hundreds of RNA G-quadruplex structures are strongly folded in both Arabidopsis and rice, providing direct evidence of RNA G-quadruplex formation in living eukaryotic cells....
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ShorterLab: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
thparietallobe: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
1stDarwin: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
pjobphd: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
connor_maltby: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
ShorterLabGroup: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
YiliangDing: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
CharlotteFare: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
smestre28: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
sjkimlab: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
OllyF1: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
iain_searle: RT @biorxivpreprint: RNA G-quadruplex structures exist and function in vivo https://t.co/PmnypBv0IO #bioRxiv
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1.998 Mikeys
#5. In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants
YILIANG DING, Zhenshan Liu, Qi Liu, Xiaofei Yang, Yueying Zhang, Matthew Norris, Xiaoxi Chen, Jitender Cheema
mRNA processing is critical for gene expression. A challenge in regulating mRNA processing is how to recognize the actual mRNA processing sites, such as splice and polyadenylation sites, when the sequence content is insufficient for this purpose. Previous studies suggested that RNA structure affects mRNA processing. However, the regulatory role of RNA structure in mRNA processing remains unclear. Here, we performed in vivo selective 2'-hydroxyl acylation analysed by primer extension (SHAPE) chemical profiling on Arabidopsis nuclear RNAs and generated the in vivo nuclear RNA structure landscape. We found that nuclear mRNAs fold differently from cytosolic mRNAs. Notably, we discovered a two-nucleotide single-stranded RNA structure feature upstream of 5' splice sites that is strongly associated with splicing and the selection of alternative 5' splice sites. Moreover, we found the single-strandedness of branch point is also associated with 3' splice site recognition. We also identified an RNA structure feature comprising two close-by...
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biorxivpreprint: In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants https://t.co/SnmwoM7dwJ #bioRxiv
biorxiv_plants: In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants https://t.co/ZZ7r9nSzp0 #biorxiv_plants
YiliangDing: RT @biorxivpreprint: In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants https://t.co/SnmwoM7dwJ…
MaizeZynskiHI: RT @biorxiv_plants: In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants https://t.co/ZZ7r9nSzp0…
Hedurubiano: RT @biorxiv_plants: In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants https://t.co/ZZ7r9nSzp0…
ephemero0621: RT @biorxiv_plants: In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants https://t.co/ZZ7r9nSzp0…
JeoffreyGeo: RT @biorxiv_plants: In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants https://t.co/ZZ7r9nSzp0…
LuciaKusumawati: RT @biorxiv_plants: In vivo nuclear RNA structurome reveals RNA-structure regulation of mRNA processing in plants https://t.co/ZZ7r9nSzp0…
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Authors: 8
Total Words: 11019
Unqiue Words: 2820

1.998 Mikeys
#6. Experimental and simulated CO2 responses of photosynthesis in leaves of  Hippophae rhamnoides L. under different soil water conditions
qin wu, cheng li, qiang chen
In the present study, the photosynthetic CO 2 response process in the leaves of H.rhamnoides L.at many soil moisture gradients during the accelerated soil drought process were evaluated, the quantitative relationship between the photosynthetic CO 2 response process and soil moisture were defined. In addition, the applicability of different CO 2 response models to fit CO 2 response processes and parameters were discussed.
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biorxivpreprint: Experimental and simulated CO2 responses of photosynthesis in leaves of Hippophae rhamnoides L. under different soil water conditions https://t.co/22W7tVMtVA #bioRxiv
biorxiv_plants: Experimental and simulated CO2 responses of photosynthesis in leaves of Hippophae rhamnoides L. under different soil water conditions https://t.co/8VQS9Xi8XB #biorxiv_plants
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Authors: 3
Total Words: 0
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1.997 Mikeys
#7. Cross-kingdom signalling regulates spore germination in the moss Physcomitrella patens
Eleanor F Vesty, Amy L Whotbread, Sarah Needs, Wesal Tanko, Kirsty L Jones, Nigel Halliday, Fatemeh Ghaderiardakani, Xiaoguang Liu, Miguel Cámara, Juliet C Coates
Plants live in close association with microorganisms that can have beneficial or detrimental effects. The activity of bacteria in association with flowering plants has been extensively analysed. Bacteria use quorum-sensing as a way of monitoring their population density and interacting with their environment. A key group of quorum sensing molecules in Gram-negative bacteria are the N-acylhomoserine lactones (AHLs), which are known to affect the growth and development of both flowering plants, including crops, and marine algae. Thus, AHLs have potentially important roles in agriculture and aquaculture. Nothing is known about the effects of AHLs on the earliest-diverging land plants, thus the evolution of AHL-mediated bacterial-plant- and algal interactions is unknown. In this paper, we show that AHLs can affect spore germination in a representative of the earliest plants on land, the Bryophyte moss Physcomitrella patens. Furthermore, we demonstrate that sporophytes of wild isolates of Physcomitrella patens are associated with...
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biorxivpreprint: Cross-kingdom signalling regulates spore germination in the moss Physcomitrella patens https://t.co/Gyj4U7PQ5j #bioRxiv
biorxiv_plants: Cross-kingdom signalling regulates spore germination in the moss Physcomitrella patens https://t.co/XjqlZalvJm #biorxiv_plants
JamesPBLloyd: RT @biorxiv_plants: Cross-kingdom signalling regulates spore germination in the moss Physcomitrella patens https://t.co/XjqlZalvJm #biorxi…
Phil_Carella: RT @biorxiv_plants: Cross-kingdom signalling regulates spore germination in the moss Physcomitrella patens https://t.co/XjqlZalvJm #biorxi…
metabevo: RT @biorxiv_plants: Cross-kingdom signalling regulates spore germination in the moss Physcomitrella patens https://t.co/XjqlZalvJm #biorxi…
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Authors: 10
Total Words: 9952
Unqiue Words: 3718

1.997 Mikeys
#8. An rpw8 quadruple mutant of Arabidopsis Col-0 is partially compromised in bacterial and fungal resistance
Baptiste Castel, Yan Wu, Shunyuan Xiao, Jonathan DG Jones
The plant immune system relies on both cell-surface and intracellular NLR (nucleotide-binding, leucine-rich repeat) receptors. NLRs respond to pathogen effectors and activate effector-triggered immunity: a cocktail of responses, often accompanied by cell death, resulting in resistance. RPW8 encodes an unusual non-NLR Resistance (R) protein and confers broad-spectrum powdery mildew resistance. It requires genetic components also required by some NLRs, resembles the HeLo-containing protein MLKL (necroptosis executor in animals) and HET-S (cell death executor in fungi) and is targeted to the extra-haustorial membrane during powdery mildew infection by its N-terminal non-cleaved signal anchor domain. RPW8 displays extensive recent duplication events in Arabidopsis and certain alleles can induce oligomerisation-dependent activation of the NLR RPP7. All these features enabled us to formulate hypotheses for RPW8 function: (1) RPW8 could be a cell death executor for defence against pathogens. (2) RPW8 could be a decoy for effector...
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biorxivpreprint: An rpw8 quadruple mutant of Arabidopsis Col-0 is partially compromised in bacterial and fungal resistance https://t.co/673ZJMwxA1 #bioRxiv
biorxiv_plants: An rpw8 quadruple mutant of Arabidopsis Col-0 is partially compromised in bacterial and fungal resistance https://t.co/RLOpY6joaM #biorxiv_plants
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1.997 Mikeys
#9. Prioritization of abiotic and biotic stress responses by direct linkage of ABI1 phosphatase and CPK5 calcium-dependent protein kinase
Heike Seybold, Jennifer Bortlik, Benjamin Conrads, Wolfgang Hoehenwarter, Tina Romeis
In nature plants are constantly challenged by simultaneous abiotic and biotic stresses, and under conflicting stress scenarios prioritization of stress responses is required for plant survival. Calcium-dependent protein kinase CPK5 is a central hub in local and distal immune signaling, required upstream of hormone salicylic acid (SA)-dependent systemic acquired resistance (SAR). Here we show that CPK5 signaling-dependent immune responses are effectively blocked and pathogen resistance is reverted either upon treatment of plants with abscisic acid (ABA) or in genetic mutant backgrounds lacking PP2C phosphatase activities including abi1-2. Consistently, enhanced immune responses occur upon co-expression of CPK5 kinase with active variants of ABI1 phosphatase ABI1G180S and ABI1G181A. Biochemical studies and mass spectrometry-based phosphosite analysis reveal a direct ABI1 phosphatase-catalyzed de-phosphorylation of CPK5 at T98, a CPK5 auto-phosphorylation site. CPK5T98A, mimicking continuous de-phosphorylation through ABI1,...
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Authors: 5
Total Words: 9708
Unqiue Words: 2836

1.99 Mikeys
#10. Differential effects of day-night cues and the circadian clock on the barley transcriptome
Lukas Müller, Laurent Mombaerts, Artem Pankin, Seth J. Davis, Alex AR Webb, Jorge Goncalves, Maria von Korff
The circadian clock is a complex transcriptional network that regulates gene expression in anticipation of the day-night cycle and controls agronomic traits in plants. However, in crops, information on the effects of the internal clock and day-night cues on the transcriptome is limited. We analysed the diel and circadian leaf transcriptomes in the barley cultivar Bowman and derived introgression lines carrying mutations in EARLY FLOWERING 3 (ELF3), LUX1, and EARLY MATURITY 7 (EAM7). Mutations in ELF3 and LUX1 abolished circadian transcriptome oscillations under constant conditions, whereas eam7 maintained oscillations of ~30% of the circadian transcriptome. However, day-night cues fully restored transcript oscillations in all three mutants and thus compensated for a disrupted oscillator in the arrhythmic barley clock mutants elf3 and lux1. Nevertheless, elf3 but not lux1 affected the phase of the diel oscillating transcriptome and thus the integration of external cues into the clock. Using dynamical modelling, we predicted a...
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MaizeZynskiHI: RT @biorxiv_plants: Differential effects of day-night cues and the circadian clock on the barley transcriptome https://t.co/13fjhYre07 #bi…
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